1. Your execute menthod is not quite right. When you do:
  2.     return new PluginResult(PluginResult.Status.OK,resultFunction);
  3.  
  4. that effectively returns nothing as a result. Instead you need to do:
  5.  
  6.     PluginResult r = new PluginResult(PluginResult.Status.NO_RESULT);
  7.     r.setKeepCallback(true);
  8.     return r;
  9.  
  10. which will tell the JS layer that there is info coming soon. Then in
  11. your onActivityResult method you need to call:
  12.  
  13.   this.success(new PluginResult(PluginResult.Status.OK, msg), this.callbackId);
  14.  
  15. and you should get your result correctly.
  16.  
  17. Check out the:

有问题的代码，参考上面修改

  1. Hi,
  2. i'm trying to pass a value from my Android java plugin to javascript in index.html.
  3. This is my code :
  4.  
  5. PluginWrapper.js
  6. var PluginWrapper = function() {
  7.  
  8. };
  9.  
  10. PluginWrapper.prototype.crop = function (name, win, fail){
  11.  
  12.    console.log("Prima di execute!");
  13.  
  14.    return PhoneGap.exec(win,fail,"PluginWrapper","crop",[name]);
  15.  
  16.   };
  17.  
  18. PhoneGap.addConstructor(function() {
  19.  
  20.  PhoneGap.addPlugin('PluginWrapper',new PluginWrapper());
  21.  
  22. });
  23.  
  24. PluginWrapper.java
  25.  
  26. package it.Prova;
  27.  
  28. import org.json.JSONArray;
  29.  
  30. import com.phonegap.api.Plugin;
  31.  
  32. import com.phonegap.api.PluginResult;
  33.  
  34. import android.content.Intent;
  35.  
  36. import android.util.Log;
  37.  
  38. public class PluginWrapper extends Plugin{
  39.  
  40.     private String resultFunction = null;    
  41.  
  42.     @Override
  43.  
  44.     public PluginResult execute(String arg0, JSONArray arg1, String arg2) {
  45.  
  46.         Log.v("PLUGIN","PLUGIN EXECUTE");
  47.  
  48.         Start("");
  49.  
  50.         return new PluginResult(PluginResult.Status.OK,resultFunction);
  51.  
  52.     }
  53.  
  54.     public String Start(String name){
  55.  
  56.         Log.v("START","START");
  57.  
  58.         Intent intent = new Intent(this.ctx,PluginActivity.class);
  59.  
  60.         this.ctx.startActivityForResult((Plugin) this, intent, );
  61.  
  62.         return "OK";
  63.  
  64.     }
  65.  
  66.     public void onActivityResult(int requestCode, int resultCode, Intent intent) {
  67.  
  68.         super.onActivityResult(requestCode, resultCode, intent);
  69.  
  70.         if (requestCode == ){
  71.  
  72.             String msg = intent.getStringExtra("returnedData");
  73.  
  74.             Log.v("FLAG","IN WRAPPER " + msg);
  75.  
  76.             resultFunction = msg;
  77.  
  78.         }
  79.  
  80.     }
  81.  
  82. }
  83.  
  84. PluginActivity.java
  85.  
  86. package it.Prova;
  87.  
  88. import android.app.Activity;
  89.  
  90. import android.content.Context;
  91.  
  92. import android.content.Intent;
  93.  
  94. import android.os.Bundle;
  95.  
  96. import android.widget.Button;
  97.  
  98. import android.util.Log;
  99.  
  100. import android.view.View;
  101.  
  102. import android.view.View.OnClickListener;
  103.  
  104. public class PluginActivity extends Activity{
  105.  
  106.     private Button btn;
  107.  
  108.     private int flag = ;
  109.  
  110.     private Intent intentNew = null;
  111.  
  112.     private Context context = this;
  113.  
  114.      @Override
  115.  
  116.         public void onCreate(Bundle savedInstanceState) {
  117.  
  118.             super.onCreate(savedInstanceState);
  119.  
  120.             setContentView(R.layout.main);        
  121.  
  122.             intentNew = this.getIntent();
  123.  
  124.             btn = (Button) findViewById(R.id.button1);
  125.  
  126.             btn.setOnClickListener(new OnClickListener(){
  127.  
  128.                 public void onClick(View v) {
  129.  
  130.                     flag = ;
  131.  
  132.                     Log.v("FLAG","1 IN PLUGIN");
  133.  
  134.                                 intentNew.putExtra("returnedData", Integer.toString(flag));
  135.  
  136.            if (getParent() == null) {
  137.                setResult(RESULT_OK, intentNew);
  138.            }
  139.            else {
  140.                getParent().setResult(RESULT_OK, intentNew);
  141.            }
  142.            finish();
  143.                        }
  144.                     });
  145.  
  146.      }
  147.  
  148. }
  149.  
  150. index.html
  151.  
  152. <!DOCTYPE HTML>
  153.  
  154. <html>
  155.  
  156. <head>
  157.  
  158. <title>PhoneGap</title>
  159.  
  160. <script type="text/javascript" charset="utf-8" src="phonegap-1.3.0.js"></script>
  161.  
  162. <script type="text/javascript" charset="utf-8" src="PluginWrapper.js"></script>
  163.  
  164. <script type="text/javascript" charset="utf-8">
  165.  
  166.    function onLoad(){
  167.  
  168.     document.addEventListener("deviceready", onDeviceReady, true);
  169.  
  170.    }
  171.  
  172.    function onDeviceReady() {
  173.  
  174.    //alert("OK");   
  175.  
  176.    }
  177.  
  178.    function getStart() {
  179.  
  180.    //window.plugins.PluginWrapper.crop("",function(r){console.log("Value in javascript " + r);},
  181.  
  182. //                    function(e){console.log("NO");}
  183.  
  184. //                    );
  185.  
  186. var a = "vuoto";
  187.  
  188. a = window.plugins.PluginWrapper.crop("");       
  189.  
  190. console.log("a = " + a);             
  191.  
  192.    }
  193.  
  194.   </script>
  195.  
  196. </head>
  197.  
  198. <body onload="onLoad()">
  199.  
  200. <h1>Hello World</h1>
  201.  
  202. <button onclick="getStart();">Start</button> <br>
  203.  
  204. </body>
  205.  
  206. </html>
  207.  
  208. Attach the source code!
  209.  
  210. Best regards,
  211.  
  212. akus85

继承CordovaPluging的代码,Pluging继承CordovaPluging

  1. public class WXPayPlugin extends CordovaPlugin {
  2.  
  3.     public static final String ACTION = "call";
  4.     private CallbackContext _callbackContext=null;
  5.  
  6.     @Override
  7.     public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {
  8.         if (action.equals(ACTION)) {
  9.             try {
  10.                 //下面两句最关键，利用intent启动新的Activity
  11.                Intent intent = new Intent().setClass(cordova.getActivity(), Class.forName(args.getString()));
  12.                 this.cordova.startActivityForResult(this, intent, );  
  13.  
  14.                 _callbackContext=callbackContext;
  15.                 //下面三句为cordova插件回调页面的逻辑代码
  16.                 PluginResult mPlugin = new PluginResult(PluginResult.Status.NO_RESULT);
  17.                 mPlugin.setKeepCallback(true);
  18.                 callbackContext.sendPluginResult(mPlugin);  
  19.  
  20.             } catch (Exception e) {
  21.                 e.printStackTrace();
  22.                 return false;
  23.             }
  24.         }  
  25.  
  26.         return true;
  27.     }
  28.     //onActivityResult为第二个Activity执行完后的回调接收方法
  29.     @Override
  30.     public void onActivityResult(int requestCode, int resultCode, Intent intent){
  31.         switch (resultCode) { //resultCode为回传的标记，我在第二个Activity中回传的是RESULT_OK
  32.             case Activity.RESULT_OK:
  33.                 Bundle b=intent.getExtras();  //data为第二个Activity中回传的Intent
  34.                 String str=b.getString("change01");//str即为回传的值
  35.                 _callbackContext.success(str);
  36.                 break;
  37.             default:
  38.                 _callbackContext.error("fail");
  39.                break;
  40.         }  
  41.  
  42.     }
  43.  
  44. }

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